CN206795870U - A kind of rotary joint sealing structure - Google Patents
A kind of rotary joint sealing structure Download PDFInfo
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- CN206795870U CN206795870U CN201720655557.8U CN201720655557U CN206795870U CN 206795870 U CN206795870 U CN 206795870U CN 201720655557 U CN201720655557 U CN 201720655557U CN 206795870 U CN206795870 U CN 206795870U
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- China
- Prior art keywords
- sealing
- motor cabinet
- ring
- rotary joint
- shroud
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Abstract
The utility model discloses a kind of rotary joint sealing structure, rotary joint includes motor cabinet, reductor and output precision；The sealing structure includes sealing shroud, sealing ring；Sealing shroud is sleeve-shaped, is placed on motor cabinet outer circumferential side, and one end is fixedly linked with output precision；Annular recess is respectively equipped with the inwall at sealing shroud both ends；In sealing ring interference insertion annular recess；Gap coordinates between sealing shroud and motor cabinet；It is interference fitted between sealing ring and motor cabinet.By the cooperation of sealing ring and sealing shroud, when the sealing shroud is rotated with output precision, two-stage sealing ring can play a part of rotary dynamic seal.Using the utility model sealing structure, the sealing of underwater rotary joint can be effectively carried out, leakage rate is effectively reduced and is even up to zero leakage, it is wear-resisting, good seal, reliable.
Description
Technical field
The utility model belongs to underwater robot field, and in particular to a kind of rotary joint sealing knot being used in aqueous medium
Structure.
Background technology
One of key issue of underwater robot development is the dynamic sealing of axle, i.e., the sealing that shaft extension goes out at housing.Underwater machine
The problems such as failure ratio that device people occurs due to sealing problem is due to electronic device and the failure that occurs is high.Rotary dynamic seal technology
It is one of key technology of underwater robot.Due to gap between axle and casing be present, cause to leak, and get over along with pressure
Height, leakage rate are bigger.Therefore, it is necessary to design that a kind of leakage rate is minimum or even the sealing structure of zero leakage, to meet underwater machine
The requirement of device people.
The content of the invention
The purpose of this utility model is to solve defect present in prior art, there is provided one kind can be to axle and casing
Between gap sealed very well, reduce the structure of leakage rate.
In order to achieve the above object, the utility model provides a kind of rotary joint sealing structure, and rotary joint includes electricity
Support, reductor and output precision；Motor cabinet is tubular, one end open；Output precision is located at motor cabinet opening, and and motor
Cavity is formed between seat；Reductor is in cavity, and one end is fixedly connected with motor cabinet by reducer shell, and the other end is by subtracting
Fast machine transmission output shaft or rotating disk are fixedly linked with output precision；Output precision is free to rotate with respect to motor cabinet；The sealing knot
Structure includes sealing shroud, sealing ring；Sealing shroud is sleeve-shaped, is placed on motor cabinet outer circumferential side, and one end is fixedly linked with output precision；
Annular recess is respectively equipped with the inwall at sealing shroud both ends；In sealing ring interference insertion annular recess；Sealing shroud and motor cabinet it
Between gap coordinate；It is interference fitted between sealing ring and motor cabinet.By the cooperation of sealing ring and sealing shroud, sealing shroud companion can be made
When being rotated with output precision, two-stage sealing ring can play a part of rotary dynamic seal.
Sealing ring uses modified teflon material；The sealing surface of sealing ring and motor cabinet and sealing shroud is coated with waterproof
Packing grease.Sealing ring uses modified teflon material, has reliable dimensional stability, high resistance against wear, good
The features such as sealing lubrication, waterproof sealing lubricating grease is smeared with reference to sealing surface, reduces coefficient of friction, is reduced caused by friction process
Loss, it can further improve the effect of rotary dynamic seal.
Annular groove is provided with the middle part of the inwall of sealing shroud；Waterproof sealing lubricating grease is filled with annular groove.By in two-stage sealing ring
Centre sets the annular groove of filling waterproof sealing lubricating grease, and waterproof sealing lubricating grease seals filling between two-stage sealing ring, can
The sealing of three-level staged is effectively formed, effectively increases the reliability of sealing.
The longitudinal section of annular groove is rectangle.
The longitudinal section of annular recess is in inverted L shape, including horizontal notch and the vertical slot that is connected；In horizontal notch extends to
Set；Vertical slot is located at below horizontal notch；Sealing ring includes the snap ring and ring type filling of unitary design；Snap ring, ring type filling
It is corresponding with horizontal notch, vertical slot respectively；Dovetail groove is provided with ring type filling inwall.Designed by the dovetail groove of sealing ring,
Make it in aqueous medium when ambient pressure is excessive, sealing ring can be deformed and play certain compensating action.
Waterproof sealing lubricating grease is filled with the dovetail groove of sealing ring.
One end of sealing shroud and the fixed connection place of output precision are provided with O-ring, and sealing shroud and output are realized by O-ring
Radial direction static seal between component；The other end of sealing shroud facilitates close with being provided with the cascaded surface being adapted at the assembling of motor cabinet
The assembling of big envelope and motor cabinet.
The utility model has advantages below compared with prior art：
1st, rotary dynamic seal is effectively realized by two-stage sealing ring and waterproof sealing lubricating grease, while uses three-level staged
Sealing structure, effectively increase the reliability of sealing.
2nd, ring design trapezoidal notch is sealed, deformation is can compensate for, preferably adapts to underwater use environment.
3rd, sealing ring uses modified teflon material, with reference to the washing property of water resistant and adhesiveness of waterproof sealing lubricating grease,
It is more suitable for the rotatory sealing of underwater environment.
4th, using the utility model sealing structure, the sealing of underwater rotary joint can be effectively carried out, effectively reduces leakage
Amount is even up to zero leakage, wear-resisting, good seal, reliable.
Brief description of the drawings
Fig. 1 is the structure sectional view of the utility model rotary joint sealing structure；
Fig. 2 is the structural representation of sealing ring in Fig. 1；
Fig. 3 is the structural representation of sealing shroud in Fig. 1.
In figure, 1- motor cabinets, 2- sealing rings, 3- waterproof sealing lubricating grease, 4- sealing shrouds, 5-O shape circles, 6- sealing rings, 7-
Output precision, 8- reductors, 21- dovetail grooves, 22- snap rings, 41- cascaded surfaces, 42- annular recess, 43- annular grooves.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model sealing structure is used for the rotary joint of underwater robot.Rotary joint includes motor
Seat 1, reductor 8 and output precision 7.Motor cabinet 1 is tubular, and one end open, other end outside is fixedly connected with motor；Output precision
7 are located at the opening of motor cabinet 1, and form cavity between motor cabinet 1；In cavity, the one end of reductor 8 passes through reductor 8
Housing is fixedly connected with motor cabinet 1, and the other end is fixedly connected with output precision 7 by the transmission output shaft or rotating disk of reductor 8,
Thus, the output shaft of motor is stretched into motor cabinet cavity, is connected by reductor 8 with the transmission of output precision 7.The phase of output precision 7
It is free to rotate to motor cabinet 1.The utility model sealing structure includes sealing shroud 4, sealing ring 2 and sealing ring 6.
With reference to Fig. 3, sealing shroud 4 is sleeve-shaped, is placed on the outer circumferential side of motor cabinet 1, between the two gap coordinate, and one end with it is defeated
Go out component 7 to be fixedly linked；Annular recess 42, and the lower section of annular recess 42 of left end are respectively equipped with the inwall at the both ends of sealing shroud 4
It is convenient to be assembled with motor cabinet 1 provided with assembling cascaded surface 41.The right-hand member of sealing shroud 4 is fastened with output precision 7 by screw
Connection, joint face is ring-type, and assembles O-ring 5 in junction to realize radial direction static seal.The longitudinal section of annular recess 42 is in
L-type, including horizontal notch and the vertical slot that is connected, horizontal notch extend to interior setting, and vertical slot is located under horizontal notch
Side.In the middle part of the inwall of sealing shroud 4（Among two annular recess）Provided with annular groove 43, the longitudinal section of annular groove is rectangle, inside filling
There is waterproof sealing lubricating grease 3.
As shown in Fig. 2 sealing ring 2,6 includes the snap ring 22 and ring type filling of unitary design, pass through snap ring 22, ring type filling mistake
Be full of the horizontal notch of embedded annular recess 42, in vertical slot, and waterproof sealing lubricating grease 3 is smeared at both sealing surfaces.And
It is interference fitted between sealing ring and motor cabinet.Isosceles trapezoid groove 21 is provided with ring type filling inwall, waterproof is filled with dovetail groove 21
Packing grease 3.Designed by the dovetail groove 21 of sealing ring, make it in aqueous medium when ambient pressure is excessive, can be to close
Seal ring, which deforms, plays certain compensating action.When motor via reducer 8 is driven, sealing shroud 4 is done coaxially with output precision 7
The rotary motion of positive and negative both direction, it can realize that rotation is dynamic close by two-stage sealing ring and the waterproof sealing lubricating grease of filling
Envelope, while three-level staged sealing structure is used, effectively increase the reliability of rotary dynamic seal.
Sealing ring uses modified teflon material, preferably adds 25% carbon fiber modified polytetrafluoroethylmaterial material, such as
Customized by enterprises such as Nanjing Kent Compound Materials Co., Ltd of factory；Waterproof sealing lubricating grease, preferably using Ai Ke companies
TK663 lubricating grease.Sealing ring uses modified teflon material, has reliable dimensional stability, high resistance against wear, good
The features such as good sealing lubricates, waterproof sealing lubricating grease is smeared with reference to sealing surface（With excellent washing property of water resistant and adhesiveness, water
Do not dissolve, do not disperse in environment；With excellent greasy property and corrosion resistance, outstanding water-fast sealing function；Use temperature
It is wide to spend scope, the features such as with most of plastics and well compatible elastomer）, coefficient of friction is reduced, reduces and is produced in friction process
Loss, can further improve the effect of rotary dynamic seal.
Claims (7)
1. a kind of rotary joint sealing structure, the rotary joint includes motor cabinet, reductor and output precision；The motor cabinet
For tubular, one end open；The output precision is located at motor cabinet opening, and cavity is formed between motor cabinet；The deceleration
Machine is in the cavity, and one end is fixedly connected with motor cabinet by reducer shell, and the other end passes through speed reducer drive output shaft
Or rotating disk is fixedly linked with output precision；The output precision is free to rotate with respect to motor cabinet；It is characterized in that：The rotation
Joint seal structure includes sealing shroud, sealing ring；The sealing shroud is sleeve-shaped, is placed on the motor cabinet outer circumferential side, and one end
It is fixedly linked with the output precision；Annular recess is respectively equipped with the inwall at the sealing shroud both ends；The sealing ring interference
In the embedded annular recess；Gap coordinates between the sealing shroud and motor cabinet；Interference between the sealing ring and motor cabinet
Coordinate.
2. rotary joint sealing structure according to claim 1, it is characterised in that：The sealing ring is using modified polytetrafluoro
Vinyl material；The sealing surface of the sealing ring and motor cabinet and sealing shroud is coated with waterproof sealing lubricating grease.
3. rotary joint sealing structure according to claim 2, it is characterised in that：It is provided with the middle part of the inwall of the sealing shroud
Annular groove；Waterproof sealing lubricating grease is filled with the annular groove.
4. rotary joint sealing structure according to claim 3, it is characterised in that：The longitudinal section of the annular groove is rectangle.
5. rotary joint sealing structure according to claim 4, it is characterised in that：The longitudinal section of the annular recess is in
L-type, including horizontal notch and the vertical slot that is connected；The horizontal notch extends to interior setting；The vertical slot is located at water
Rise as high as the banks below mouth；The sealing ring includes snap ring and ring type filling；The snap ring, ring type filling respectively with horizontal notch, vertical slot
It is corresponding；Dovetail groove is provided with the ring type filling inwall.
6. rotary joint sealing structure according to claim 5, it is characterised in that：Filled in the dovetail groove of the sealing ring
There is waterproof sealing lubricating grease.
7. rotary joint sealing structure according to claim 6, it is characterised in that：One end of the sealing shroud and output group
The fixed connection place of part is provided with O-ring；The other end of the sealing shroud is with being provided with the cascaded surface being adapted at the assembling of motor cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720655557.8U CN206795870U (en) | 2017-06-07 | 2017-06-07 | A kind of rotary joint sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720655557.8U CN206795870U (en) | 2017-06-07 | 2017-06-07 | A kind of rotary joint sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206795870U true CN206795870U (en) | 2017-12-26 |
Family
ID=60744304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720655557.8U Active CN206795870U (en) | 2017-06-07 | 2017-06-07 | A kind of rotary joint sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206795870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321970A (en) * | 2018-05-11 | 2018-07-24 | 洪秀峰 | A kind of waterproof steering engine |
| CN108928401A (en) * | 2018-06-12 | 2018-12-04 | 杭州云深处科技有限公司 | The shell and bionic machine everybody leg for having functions of waterproof and dustproof |
-
2017
- 2017-06-07 CN CN201720655557.8U patent/CN206795870U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321970A (en) * | 2018-05-11 | 2018-07-24 | 洪秀峰 | A kind of waterproof steering engine |
| CN108928401A (en) * | 2018-06-12 | 2018-12-04 | 杭州云深处科技有限公司 | The shell and bionic machine everybody leg for having functions of waterproof and dustproof |
| CN108928401B (en) * | 2018-06-12 | 2024-03-15 | 杭州云深处科技有限公司 | Shell with waterproof and dustproof functions and bionic robot leg |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Water Pavilion Road Jiangning District moling street Nanjing City, Jiangsu province 211100 No. 1266 Patentee after: Nanjing Keyuan Intelligent Technology Group Co.,Ltd. Address before: Water Pavilion Road Jiangning District moling street Nanjing City, Jiangsu province 211100 No. 1266 Patentee before: NANJING SCIYON AUTOMATION GROUP Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |